Retrieve pinned flag directly from Notification class

ui/message_center/views/message_center_view.cc

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/message_center/views/message_center_view.h"
 
 #include <list>
 #include <map>
 
 #include "base/macros.h"
@@ skipping 625 matching lines @@
   button_bar_->SetTitle(GetButtonBarTitle());
 
   if (!is_locked_)
     EnableCloseAllIfAppropriate();
 }
 
 void MessageCenterView::EnableCloseAllIfAppropriate() {
   if (mode_ == Mode::NOTIFICATIONS) {
     bool no_closable_views = true;
     for (const auto& view : notification_views_) {
-      if (!view.second->IsPinned()) {
+      if (!view.second->pinned()) {
         no_closable_views = false;
         break;
       }
     }
     button_bar_->SetCloseAllButtonEnabled(!no_closable_views);
   } else {
     // Disable the close-all button since no notification is visible.
     button_bar_->SetCloseAllButtonEnabled(false);
   }
 }
@@ skipping 12 matching lines @@
   // TODO(dimich): add MessageCenter::GetVisibleNotificationById(id)
   MessageView* view = view_iter->second;
   const NotificationList::Notifications& notifications =
       message_center_->GetVisibleNotifications();
   for (NotificationList::Notifications::const_iterator iter =
            notifications.begin();
        iter != notifications.end(); ++iter) {
     if ((*iter)->id() == id) {
       int old_width = view->width();
       int old_height = view->height();
-      bool old_pinned = view->IsPinned();
+      bool old_pinned = view->pinned();
       message_list_view_->UpdateNotification(view, **iter);
       if (view->GetHeightForWidth(old_width) != old_height) {
         Update(true /* animate */);
-      } else if (view->IsPinned() != old_pinned) {
+      } else if (view->pinned() != old_pinned) {
         // Animate flag is false, since the pinned flag transition doesn't need
         // animation.
         Update(false /* animate */);
       }
       break;
     }
   }
 
   // Notify accessibility that the contents have changed.
   view->NotifyAccessibilityEvent(ui::AX_EVENT_CHILDREN_CHANGED, false);
 }
 
 }  // namespace message_center